sync: Specialize functions that fetch type root

sync/syncable/directory.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sync/syncable/directory.h"
 
 #include <iterator>
 
 #include "base/base64.h"
 #include "base/debug/trace_event.h"
@@ skipping 934 matching lines @@
 }
 
 bool Directory::InitialSyncEndedForType(ModelType type) {
   syncable::ReadTransaction trans(FROM_HERE, this);
   return InitialSyncEndedForType(&trans, type);
 }
 
 bool Directory::InitialSyncEndedForType(
     BaseTransaction* trans, ModelType type) {
   // True iff the type's root node has been received and applied.
-  syncable::Entry entry(trans,
-                        syncable::GET_BY_SERVER_TAG,
-                        ModelTypeToRootTag(type));
+  syncable::Entry entry(trans, syncable::GET_TYPE_ROOT, type);
   return entry.good() && entry.GetBaseVersion() != CHANGES_VERSION;
 }
 
 string Directory::store_birthday() const {
   ScopedKernelLock lock(this);
   return kernel_->persisted_info.store_birthday;
 }
 
 void Directory::set_store_birthday(const string& store_birthday) {
   ScopedKernelLock lock(this);
@@ skipping 475 matching lines @@
 
   for (OrderedChildSet::const_iterator i = children->begin();
        i != children->end(); ++i) {
     DCHECK_EQ(parent_id, (*i)->ref(PARENT_ID));
     result->push_back((*i)->ref(META_HANDLE));
   }
 }
 
 }  // namespace syncable
 }  // namespace syncer